Tab indent not showing in my log.txt filebrowsing

I have a log file which I create using "t" as a tab to format the output of the log . When opened up in notepad++ 6.8.8 the tab indents are not showing where i have used the "t" character for tab spacing. I have ‘Show Indent Guide’ on. When I create a new text document the tab indent are working as they should. Is “`t” not recognized by notepad++ as a tab ?

When you open a new document and you press the tab key you see the tab sign —> , correct ?
If you open your logfile you do have the tab spacing but not the sign —>, correct?
If you zoom into the logfile as much as you can do you see dots instead?

When you open a new document and you press the tab key you see the tab sign —> , correct ?

YES … but only if ‘View/Show Symbol/Show White Space and Tab’ has been selected, and if I have ShowIndentGuide on then I see the indent guide as well.

If you open your logfile you do have the tab spacing but not the sign —>, correct?

I have blank tab spacing, and same as above when ‘View/Show Symbol/Show White Space and Tab’ has been selected the ‘–>’ tab arrows show … but if turn on ShowIndentGuide there is no indent guide showing like in a new text document (above).

If you zoom into the logfile as much as you can do you see dots instead?

Ahh, now I got it.
Hmm, fonts may be a culprit but this wouldn’t explain why new doc show the line indent.
Different languages selected? Maybe with different font settings?
Maybe try to reset it.
Settings->Style Configurator->Global Styles->Indent guideline style
Change attributes and revert it. (Changes should appear immediately)

Afaik, this isn’t possible with npp natively.
Would you mind show us visible what you try to achieve by, maybe using the pipe | and/or minus- or underscore_ chars?
Maybe someone can think of an alternative.